To see what model looks like when run click here
We can cause an overshoot and collapse structure to oscillate if we
provide it with a resource that can renew itself quickly. The system
is one of equilibrium until it is shocked which causes the system
to oscillate.
Hint: Set the DT to 1 and change the simulation method to either of the
two Runge-Kutta methods.
To create the model:
This will shock the system. The step command is a builtin function of STELLA.
The first number in parentheses is the step height
while the second number is at which time step to make the step.
Make sure the inflow and outflow of the stock values are the same.
Do the same for the resource inflow and outflow.
Set the simulation of a longer run time...say about 100 time steps.
stock = 50
outflow 1 = 10
resource * conversion 1
resource = 100
inflow 2 = 20
outflow 2 = stock * conversion 2
conversion 2 = .4
conversion 1 = .1*step(1,1)